Metamask: Getting “contract is missing links for the following libraries” error even after adding as libraries while getting contract factory using ethers.js

Mill Metamask: “Missing Links”

When introducing intelligent contracts, especially in the integration of a third party libraries, you often encounter problems during deployment. One common problem occurs when hardhat encounters errors that require additional dependencies in the library included in the link between the contract.

In this article, we deepen the details of the integration of Metamask and Eether.js with Hardhat, we will examine why “the contract is missing a link error”, and we are steps to solve this problem.

Understanding configuration of the contract of contract

In the introduction of an intelligent agreement with external libraries, the Link Link assembly plays a decisive role to ensure the inclusion of all the desired addictions. The configuration of the contract configuration determines which dependence is associated with the binary code of the contract.

In Metams, you can use “Network Settings a network ticket and later require some library addictions. For example::

`Bash

NPX hardhat network Network Metamask-network Solan Dev-Prroxy https: //api-memamask.decentralized.fi/v1/multiadresswessWebSocket/0x …

`

Error “Missing Links”

When Metamask encounters the following error message:

Contractual missing links in the following libraries: [library1], [library2] ...

This means that Hardhas cannot determine what dependencies are required in the contract. This can happen for several reasons, such as:

• Configuration of the contract link is incomplete or incorrect.

• The library's dependence is not correctly determined by the "network ticket.

• The external library requires further steps (eg webpack configuration file).

Solution of error

Follow the following steps to solve this problem:

• Check that the composition of the contractual link check : Make sure that the configuration of the contractual link management precisely determines all the required library dependence using the “Network ticket.

2

Example of configuration

Here is an example of a complete configuration:

Javascript

Const Hardhatconfig = {

// Account and Metamask network (eg Sorana)

Networks: {{

Sorana: {{

Name: “Sorana”,

Host: ‘https: //api-memamask.decentralized.fi/v1/multiaddresswebsocket/0x …’, ‘

// Set the proxy URL using the “-Proxy

Proxy: {

// Example of the Proxy set with your own webpack configuration file

https: (AddDr) =>$ {AddDr} .unpkg.com ‘,

},

},

},

};

`

• Make sure that dependence on your library : Make sure all the required libraries are properly configured using a ‘network ticket’ and are included in the configuration of the contract configuration.

More tips

• Use the webpack.config.js ‘file to set up a webpack for your project.

• Make sure all the configurations of your own interventions or construction phase are implemented correctly.

Following these guidelines, you should be able to solve the error of “missing contracts” and successfully introduce your intelligent agreement with external libraries using Metamask and etters.JS.